Delano h



(No Model.) D..H.DUGAR.

GONNBGTING ROD. v No. 372,848. Patented Nov. 8, 1887.

UNITED STATES PATENT OFFICE.

DELANO H. DUGAR, OF CEDABTOWN, GEORGIA.

CQNNECTING-ROD.

SPECIFICATION forming part of Letters Patent No. 372,843, dated November8, 1887.

Application filed April 16, 1887. Serial No. 235,010. (No model.)

To all whom it may concern:

Be it known that I, DELANO H. DUGAR, a

. citizen of the United States, residing at Cedartown, in the county ofPolk and State of Georgia, have invented certain new and usefulImprovements in Connecting-Rods for Steam- Engines; and I do declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the letters and figures of reference marked thereon, which form apart of this specification.y

`This invention relates to pitmen or connecting-rods, and has for itsobject to devise a construction for taking up wear without varying thedistance between the centers of the bearings.

The improvement consists in having a twopart box fitted in the end orends of the pitman, the sides ofthe box tapering, and a cap providedwith wedge shaped projections, which embrace and are adapted to bearagainst the inclined sides of the halves of the box, so that an inwardmovement of the cap brings the halves close together, advancing themtoward each other equally, thus preserving the center of the bearing.

The improvement further consists in the novel features of construction,hereinafter more fully set forth, claimed, and shown in the annexeddrawings, in which- Figure l is a top plan view. of a pitman orconnecting-rod embodying my invention; Fig. 2, a section on the line :vmof Fig. 1; Fig. 3, a perspective view of the cap, and Fig. 4 aperspective view of one of the halves of the box.

The connecting-rod or pitman may be of any desired pattern, and has itsend provided with the recess e, which receives the box composed of thehalves C C. rlhe sides o taper, forming wedge-shaped spaces on each sideof the box, between it and the end walls of the recess c, for receivingthe wedge-shaped projections b of the cap B, bolted to the side of theconnecting-rod by the bolts E, passing through the rod on each side ofthe recess and screwed into the cap. The jam-nuts F lock the cap in anyadj usted position. The cap has flanges b at each end, which fit incorresponding rabbets H in the rod and guide the cap in its movements.The adjacent ends of the halves of the boxes are normally separated, sothey may be brought together when taking up wear, and the sides areanged, and the flanges overlap the sides of the connectingrod andthecap, as shown.

ln practice, when it becomes necessary to take up wear, the bolts E arescrewed into the cap, thus drawing the cap closer to the sides of therod and forcing the wedge-shaped projections b between the halves of thebox and the walls of the recess, and this operation advances the halvestoward each other in opposite directions, so that the center of thebearing remains intact. When the cap is adjusted, the jam-nuts areturned up against it and fix its position.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. The connecting-rod having a recessed end, in combination with atwo-part box having tapering sides fitted in the recess, and the cap'provided with wedge-shaped .projections which enter vthe recess andembrace the box, substantially as and for the purpose specified.

2. The combination, with the connectingrod having a recessed end andrabbets on each side of the recess, of the box made in halves and havingtapering sides, and the cap provided with wedge-shaped projections andhaving flanges which are adapted to fit the rabbets, substantially asand for the purpose set forth.

3. The combination, with the connectingrod having a recessed end, thebox composed of two halves and having tapering sides, and the cap'provided with Wedge-shaped projections, of the bolts passed through therod on each side of the recess and screwed into the cap, and thejam-nuts mounted on the ends of the bolts, substantiallyas set forth.

In testimony whereof I affix my signature in presence of two witnesses.

DELANO H. DUGAR.

Witnesses: j

EPHRAIM E. FEIsELL, SIMON KATZENsTEIN.

